YOU SAID:
I don't speak english very well.
INTO JAPANESE
非常によく、英語を話さない。
BACK INTO ENGLISH
Do not speak English very well.
INTO JAPANESE
非常によく英語を話すことはありません。
BACK INTO ENGLISH
You do not speak English very well.
INTO JAPANESE
あなたは非常によく英語を話さない。
BACK INTO ENGLISH
You do not speak English very well.
That didn't even make that much sense in English.